NATIONAL HARBOR, MD -- Engine-maker Pratt & Whitney has completed critical testing on its small turbofan engine series for potential use on the Air Force’s Collaborative Combat Aircraft, the company announced today, proving current production engines can provide more thrust on unmanned platforms than previously thought.
“We're seeing strong demand from both the services and international customers for CCA's and we really have been able to provide solutions that we're looking to field faster, again, moving at the speed of relevance,” Jill Albertelli, president of Pratt & Whitney’s military engines business, told reporters during a briefing last week. “So, one way for us to do that is to provide some commercial off-the-shelf propulsion solutions or to take them and have a very close derivative. So that's an offering we can provide to customers right away.”
The Air Force has stated a goal of fielding its first increment of the combat-coded drones intended to team with manned fighters by the end of the decade.
This CCA propulsion effort is separate from the new 500 to 1,800 pound thrust engine series the company unveiled on Monday, which are intended for specific use on munitions as well as the loyal drone wingmen.
Today’s announcement refers to the RTX-subsidiary’s commercial offerings, including PW500 and PW300 engines, that have been actively testing with some adaptive equipment tacked onto it for CCA applications, Albertelli said.
“Through our civil aviation business, we’re able to provide a range of thrust classes to satisfy some of those CCA requirements, and we’re making really good progress,” she said. “We recently completed some critical testing on a small turbofan engine that will be part of the family for use on CCAs and we’ve confirmed that for unmanned applications, we can push the throttle of these commercial off-the-shelf engines offering up to 20% beyond their qualified thrusting capability of today.”
A second series of tests is underway, Albertelli added, this time to monitor some of the inlet flow that is required with embedded engines.
“We’ve had some very good, successful testing to prove the embedding of these engines is extremely feasible and the testing is going well,” she said, noting that if air flow is blocked it could potentially impact the system’s performance.
“These tests are pushing those limits, intentionally distorting airflow around the flight envelope to document performance and produce a reliable prediction tool for future installations,” Pratt & Whitney wrote in its news release.